For sender i have "${EMAIL_VAR} User@domain.com" and have NPE.
Probably problem appeared after upgrading to 2.24.1 and token plugin...
Email was triggered for: Success
Email was triggered for: Fixed
Trigger Success was overridden by another trigger and will not send an email.
Sending email for trigger: Fixed
ERROR: Could not send email as a part of the post-build publishers.
java.lang.NullPointerException
at java.util.regex.Matcher.getTextLength(Matcher.java:1140)
at java.util.regex.Matcher.reset(Matcher.java:291)
at java.util.regex.Matcher.<init>(Matcher.java:211)
at java.util.regex.Pattern.matcher(Pattern.java:888)
at hudson.plugins.emailext.plugins.ContentBuilder$Tokenizer.<init>(ContentBuilder.java:171)
at hudson.plugins.emailext.plugins.ContentBuilder.replaceTokensWithContent(ContentBuilder.java:106)
at hudson.plugins.emailext.plugins.ContentBuilder.replaceTokensWithContent(ContentBuilder.java:124)
at hudson.plugins.emailext.plugins.ContentBuilder.transformText(ContentBuilder.java:88)
at hudson.plugins.emailext.ExtendedEmailPublisher.getContent(ExtendedEmailPublisher.java:540)
at hudson.plugins.emailext.ExtendedEmailPublisher.createMail(ExtendedEmailPublisher.java:363)
at hudson.plugins.emailext.ExtendedEmailPublisher.sendMail(ExtendedEmailPublisher.java:273)
at hudson.plugins.emailext.ExtendedEmailPublisher._perform(ExtendedEmailPublisher.java:265)
at hudson.plugins.emailext.ExtendedEmailPublisher.perform(ExtendedEmailPublisher.java:225)
at hudson.tasks.BuildStepMonitor$3.perform(BuildStepMonitor.java:36)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:717)
at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:692)
at hudson.model.Build$BuildExecution.cleanUp(Build.java:192)
at hudson.model.Run.execute(Run.java:1546)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:236)
Finished: SUCCESS